EDIT: I understood my mistake: I used the wrong component. I am now using columns and rows instead of a grid and everything is stacked perfectly on mobile. Sorry.
Sorry for the probably naive question, I'm learning. I chose a basic template (Twenty Twenty Four) because I understood it was a good way to build a simple website without fizzling too much with CSS and files. But I noticed that a very simple component – a grid with some text – is looking very bad on mobile and therefore requires me to work with the CSS? You can see the result in the attachedi mages. This is very weird to me (I read "The Twenty Twenty-Four theme for WordPress is crafted keeping responsiveness in mind.") and I'm here only to ask if this is normal, otherwise maybe I did something wrong. Thank you to anyone willing to give me a tip.
Responsiveness can only be automated up to a point. You created a system whereby three words that are very long and big letters cannot fit on the page together. What do you expect the theme to do in such a case?